chrome/browser/ui/webui/extensions/command_handler.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_WEBUI_EXTENSIONS_COMMAND_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_COMMAND_HANDLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/scoped_observer.h"
  10 #include "content/public/browser/web_ui_message_handler.h"
  11 #include "extensions/browser/extension_registry_observer.h"
  12
  13 class Profile;
  14
  15 namespace base {
  16 class DictionaryValue;
  17 class ListValue;
  18 }
  19
  20 namespace content {
  21 class WebUIDataSource;
  22 }
  23
  24 namespace extensions {
  25 class Command;
  26 class CommandService;
  27 class Extension;
  28 class ExtensionRegistry;
  29
  30 // The handler page for the Extension Commands UI overlay.
  31 class CommandHandler : public content::WebUIMessageHandler,
  32                        public ExtensionRegistryObserver {
  33  public:
  34   explicit CommandHandler(Profile* profile);
  35   ~CommandHandler() override;
  36
  37   // Fetches the localized values for the page and deposits them into |source|.
  38   void GetLocalizedValues(content::WebUIDataSource* source);
  39
  40   // WebUIMessageHandler implementation.
  41   void RegisterMessages() override;
  42
  43  private:
  44   // ExtensionRegistryObserver implementation.
  45   void OnExtensionLoaded(content::BrowserContext* browser_context,
  46                          const Extension* extension) override;
  47   void OnExtensionUnloaded(content::BrowserContext* browser_context,
  48                            const Extension* extension,
  49                            UnloadedExtensionInfo::Reason reason) override;
  50
  51    // Update the list of extension commands in the config UI.
  52   void UpdateCommandDataOnPage();
  53
  54   // Handles requests from javascript to fetch the extensions data, including
  55   // the commands it contains.
  56   // Replies back through: ExtensionCommandsOverlay.returnExtensionsData.
  57   void HandleRequestExtensionsData(const base::ListValue* args);
  58
  59   // Handles requests from javascript to set a particular keyboard shortcut
  60   // for a given extension command.
  61   void HandleSetExtensionCommandShortcut(const base::ListValue* args);
  62
  63   // Handles requests from javascript to change the scope of a particular
  64   // keyboard shortcut for a given extension command.
  65   void HandleSetCommandScope(const base::ListValue* args);
  66
  67   // Handles requests from javascript to temporarily disable general Chrome
  68   // shortcut handling while the web page is capturing which shortcut to use.
  69   void HandleSetShortcutHandlingSuspended(const base::ListValue* args);
  70
  71   // Fetches all known commands, active and inactive and returns them through
  72   // |commands|.
  73   void GetAllCommands(base::DictionaryValue* commands);
  74
  75   Profile* profile_;
  76
  77   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
  78       extension_registry_observer_;
  79
  80   DISALLOW_COPY_AND_ASSIGN(CommandHandler);
  81 };
  82
  83 }  // namespace extensions
  84
  85 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_COMMAND_HANDLER_H_